Cutting machine



J. B. HADAWAY.

CUTTING MACHINE. APPLICATION FILED JAN- 12. I920.

0 54 I Patented 0015.3, 1922.v

2 SHEETS-SHEET I.

J. B. HADAWAY.

CUTTING MACHINE. 7 APPLICATION FILED JAN. 12.1920.

1,430,546. Patented Oct. 3, 1922.

2 SHEETSSHEET Z.

operative upon relative approaching movement of the die and cutting block in a vertical plane.

Other features of the invention, together with certain details of construction and combination of parts, will be described in the specification and pointed out in the appended claims.

In the drawings Fig. 1 is a sectional view through a portion of a cutting machine illustrating one embodiment of my invention; and

Fig. 2 is a perspective View of the cutting block and die mechanism per so.

As disclosed in the drawings, there is provided preferably a movable outing block 4.- arrauged to cooperate with a die 6 which is relatively stationary in the vertical. plane,

it being understood however, that the cutting lock may be made stationary and the die movable toward the bloclr without departing from the spirit of the invention. Mounted in the frame 8 of the machine is a reciprocable plunger 10 operated from an eccentric 12 on the main shaft 1a and arranged to carry adjust-ably at its lower end the said cutting block 4t. Below the cutting block 1 and in alinement therewith there is provided a seat 16 on the frame of the machine designed to receive interchangeably any one of a plurality of plates 18 which carry dies ofvarious sizes. Preferably the plate is clamped to the frame for ready de tachment therefrom by means of a clamp 20. Each plate 18 is provided with grooved projecting ribs 22 (Fig. 2) designed to receive in slidable relation a plate 24% having flanges 25 receivable in said grooves and correspondingly shaped with respect thereto. T he construction thus presented is such that the plate at is retained on the supporting plate 18' but is movable on the same in the plane of their contacting surfaces. Adjustably mounted at one extremity of the plate 18 is a block 28 against which the movable plate 24 is yieldingly held through the operation of a spring-pressed plunger 30 mounted in a bearing furnished by a projecting portion of the plate 18 at the extremity opposite to that which supports the block 28. The plunger is urged in the direction to press the plate 24 against the block 28 by means of a spring 32, an adjustable member 34 being provided to retain the spring and plunger in proper position and to permit ready removal thereof in case it should be necessary or de sirable to replace either. The die 6 is removably secured to the plate 24 by means of a flange 36 on plate 24 and adjustable securing devices 38.

In the present embodiment of the invention, the means for causing movement of the die in the horizontal plane consists of a wedge member 40 secured adjustably to a projection 42 on the cutting block t. It will be understood that as the cutting block descends in the cutting operation, the wedge portion a l: of tle wedge member engages the adjacent end of the plate 24: and by a cam or wedge action torces the plate toward the right, in 1, against the action of the ly the die 6 is provided with an (Fig. 2) bevel d on the inude andv with an edge 50 O'VfillfiilllQlil and formed 0 o in with an undercut bevel 52 along the substantially con-vex edge portion, the undercut bevel being at the same angle as the bevel on as, thus permitting lateral shifting of the blank or heel lift due to the bevel on edge 18 as the cutting edges pass through the material. Because of the fact that the blank can shift, there is little or no compression of the material of the blank along its beveled bevel at the bro? t edge of the die cor esponds to the bevel along the 'ft is a depth cormaterial to be cut. It is to be noted that the cutting edge of the die in the substantially parallel sides thereof is not beveled on the inside but is beve ed on the outside to produce the ordinary ve tical edges at the sides of the lift, the bevel of the convex portion of the upper edge of the die being (:5. to shade off gradually into t 1e straig c portions of the sites of the die. 7

n the operation of the machine, sheet ma 1 ,al is introduced over the die and in contact with the either by hand or by suitable feeding mechanism. Upon operw tion of the cut? g mechanism, the cutting block in the illrtratcd embodiment of the machine descends upon. the die and forces a blank into the die, the cutting operation being effected by the cutting block in its movement toward the die and also by a movement of the die occurring simultaneously with the increment firs described and in a direction at right angles thereto to effect the bevclling of the lift by a cutting operation solely, as distinguished from a cutting operation in which compression of the edges of the lift is depended upon in part to produce the bevel of the edges thereof.

Having described my invention what I claim as new-and desire to secure by ters Patent of the United States is 1. in a rutting machine, the combination cutting block and a die constructed and arranged for relative reciprocation toward and from each other to cut blanks :from sheet material, or means controlled by the cutting block for moving the die in a direction transverse to the direction of relative approaching movement during the cutting operation to efiect the cutting of blanks with beveled. edges.

2. In a cutting machine, a hollow die for cutting blanks from sheet material and a cutting block movable toward and from each other to effect cutting operations, and means controlled by the block and operated during such relative movement of the die and block to effect movement of the die in a direction transverse to the direction of said relative movement.

3. In a cutting machine, a cutting block and a die relatively reciprocable toward and from each other to effect a cutting operation, and means carried by the cutting block for ei'l ecting a movement of the die in a direction transverse to the direction of relative movement of the die and block.

l. In a cutting machine, cutting means comprising cutting block and die members relatively movable With respect to each other to elifect a cutting operation, and means carried by one of said members to. effect movement of the other member in a direction transverse to the direction of relative approaching movement of said members.

5. In a cutting machine, a cutting block and a die arranged for relative movement to effect a cutting operation, and a cam member carried by the block to effect a horizontal movement of the die during the relative movement of the die and cutting block.

6. In a cutting machine, a die adapted to cut blanks from sheet material and mounted to slide in a horizontal plane, and a cutting block constructed and arranged to force material upon the said die and to cause sliding movement of the die for cutting beveled edges on the blanks during the blank cutting operations.

7. In a cutting machine, a cutting block and die relatively reciprocable toward and from each other to etlect a cutting operation, means connected to the block and operative positively to move the die in a direction transverse of said relative movement of the die and block, and means for yieldingly returning the die to initial position.

8. In a cutting machine, a cutting block, a die comprising an integral hollow member constructed to cut from sheet material placed over the die'a blank of the shape oi the cutting edge of the member, and means for causing relative movements of the die and the cutting block in directions angularly related to each other during the cutting operation.

9. In a cutting machine, a die having a beveled portion along the upper convex edge thereoi and also along the breast edge thereof and having knife edges connecting the beveled edges in a unitary die structure, a cutting block, and means for causing relative movement of the die and cutting block in directions angularly related to each other.

10. In a cutting machine, a cutting block, a unitary die structure, and means for causing relative movement of the die and cutting block simultaneously along paths angularly related to each other to effect the cutting of a blank with beveled edges.

11. A die having a beveled breast edge and a convexly curved edge formed on the inside With an undercut bevel corresponding in depth to that or the bevel of the breast edge.

In testimony Whereoi l have signed my name to this specification.

JOHN B. HADAWAY. 

